Adds EngineGeolocationFeature for Blimp Geolocation project.

blimp/engine/feature/geolocation/blimp_location_provider.cc

Index: blimp/engine/feature/geolocation/blimp_location_provider.cc
diff --git a/blimp/engine/feature/geolocation/blimp_location_provider.cc b/blimp/engine/feature/geolocation/blimp_location_provider.cc
index de86b9fc1e65b31384c8cbdd43cca52128e388ca..c5149a17a5d149a4aa17ba927538278557b15fd6 100644
--- a/blimp/engine/feature/geolocation/blimp_location_provider.cc
+++ b/blimp/engine/feature/geolocation/blimp_location_provider.cc
@@ -4,6 +4,9 @@
 
 #include "blimp/engine/feature/geolocation/blimp_location_provider.h"
 
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/memory/weak_ptr.h"
 #include "content/public/common/geoposition.h"
 
 namespace blimp {
@@ -15,12 +18,21 @@ BlimpLocationProvider::~BlimpLocationProvider() {
   StopProvider();
 }
 
+void BlimpLocationProvider::SetDelegate(
+    base::WeakPtr<BlimpLocationProvider::Delegate> delegate) {
+  DCHECK(delegate);
+  DCHECK(!delegate_);
+
+  delegate_ = delegate;
+}
+
 bool BlimpLocationProvider::StartProvider(bool high_accuracy) {
-  NOTIMPLEMENTED();
+  delegate_->StartProvider(high_accuracy);
   return true;
 }
 
 void BlimpLocationProvider::StopProvider() {
+  delegate_->StopProvider();
 }
 
 void BlimpLocationProvider::GetPosition(content::Geoposition* position) {
@@ -30,32 +42,16 @@ void BlimpLocationProvider::GetPosition(content::Geoposition* position) {
 }
 
 void BlimpLocationProvider::RequestRefresh() {
-  NOTIMPLEMENTED();
+  delegate_->RequestRefresh();
 }
 
 void BlimpLocationProvider::OnPermissionGranted() {
   RequestRefresh();
-  NOTIMPLEMENTED();
-}
-
-void BlimpLocationProvider::NotifyCallback(
-    const content::Geoposition& position) {
-  DCHECK(!callback_.is_null());
-
-  callback_.Run(this, position);
-}
-
-void BlimpLocationProvider::OnLocationResponse(
-    const content::Geoposition& position) {
-  NotifyCallback(position);
-  NOTIMPLEMENTED();
 }
 
 void BlimpLocationProvider::SetUpdateCallback(
     const LocationProviderUpdateCallback& callback) {
-  DCHECK(!callback.is_null());
-
-  callback_ = callback;
+  delegate_->SetUpdateCallback(base::Bind(callback, base::Unretained(this)));
 }
 
 }  // namespace engine